Electronic devices

Abstract

The present application discloses an electronic device, which relates to the field of communication technology. Since at least one through hole with a sum of circumferences equal to the target wavelength is provided on the antenna part, the at least one through hole can increase the working frequency band of the antenna part, so that the electronic device can receive more signals of different frequency bands. Compared with the method of adding antennas through LDS technology, the manufacturing cost of the electronic device provided by the present application is lower.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an electronic device. Background Art

[0002] In order to improve communication performance, an antenna may be added to an electronic device so that the electronic device can receive signals in more frequency bands.

[0003] In the related art, a laser direct structuring (LDS) technology may be used to add an antenna to an electronic device.

[0004] However, the cost of adding antennas using LDS technology is high. Summary of the invention

[0005] The present application provides an electronic device that can solve the problem of high cost of adding antennas using LDS technology in related technologies. The technical solution is as follows:

[0006] The electronic device comprises: a metal middle frame;

[0007] At least two gaps are provided on the metal middle frame, and the at least two gaps separate the metal middle frame into an antenna portion and a ground portion;

[0008] The antenna portion is provided with a feeding point, a first grounding point and at least one through hole, and the feeding point and the first grounding point are located on two sides of one of the through holes;

[0009] The sum of the perimeters of the at least one through hole is equal to a target wavelength, and the target wavelength is a wavelength corresponding to a target operating frequency band among a plurality of different operating frequency bands of the antenna portion.

[0010] Optionally, the target operating frequency band is a maximum operating frequency band among the multiple different operating frequency bands.

[0011] Optionally, the at least one through hole includes a first through hole and a second through hole, and an arrangement direction of the first through hole and the second through hole is perpendicular to an extension direction of the antenna portion;

[0012] The feeding point is located between the two through holes, and the first grounding point is located on a side of the first through hole away from the feeding point;

[0013] A second grounding point is also provided on the antenna portion, and the second grounding point is located on a side of the second through hole away from the feeding point.

[0014] Optionally, each of the through holes is a rectangular through hole, and a length direction of each of the through holes is parallel to an extension direction of the antenna portion.

[0015] Optionally, a difference between half of the perimeter of each through hole and the length of the through hole is smaller than a difference threshold.

[0016] Optionally, the electronic device further includes: a first tuning device connected to the antenna portion.

[0017] Optionally, the first tuning device includes at least one of a switch, a capacitor and an inductor.

[0018] Optionally, the electronic device further comprises: a printed circuit board connected to the grounding portion;

[0019] The first tuning component is disposed on the printed circuit board.

[0020] Optionally, the electronic device further includes: a second tuning device;

[0021] The second tuning device is connected to the feeding point and is used for performing impedance tuning on the antenna portion.

[0022] Optionally, each of the through holes is filled with insulating material.

[0023] The beneficial effects of the technical solution provided by this application include at least:

[0024] The present application provides an electronic device, where the antenna portion is provided with at least one through hole whose sum of circumferences is equal to the target wavelength, and the at least one through hole can increase the working frequency band of the antenna portion, so that the electronic device can receive more signals of different frequency bands. Compared with the method of adding antennas through LDS technology, the manufacturing cost of the electronic device provided by the present application is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of an electronic device in the related art;

[0027] Figure 2 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0028] Figure 3 is a schematic diagram of the structure of another electronic device provided in an embodiment of the present application;

[0029] Figure 4 is a structural schematic diagram of another electronic device provided in an embodiment of the present application;

[0030] Figure 5 is a structural schematic diagram of another electronic device provided in an embodiment of the present application;

[0031] Figure 6 This is a schematic diagram of current distribution when the working frequency band of an antenna part provided in an embodiment of the present application is a 4G LTE low frequency band;

[0032] Figure 7 It is a schematic diagram of current distribution when the working frequency band of an antenna part provided in an embodiment of the present application is a 4G LTE medium frequency band;

[0033] Figure 8 This is a schematic diagram of current distribution when the working frequency band of an antenna part provided in an embodiment of the present application is a 4G LTE high frequency band;

[0034] Fig. 9 This is a schematic diagram of current distribution when the working frequency band of an antenna part provided in an embodiment of the present application is a 5G frequency band;

[0035] Fig.10 This is a schematic diagram of current distribution when the working frequency band of another antenna part provided in an embodiment of the present application is a 5G frequency band;

[0036] Fig.11 It is a schematic diagram of a return loss curve of an antenna portion provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0038] Figure 1 Schematic diagram of the structure of an electronic device in the related art, which can only receive or send 4th generation (G) long term evolution (LTE) mobile communication signals, i.e. 4G LTE signals. Figure 1 It can be seen that the electronic device may include a metal middle frame 10, and a gap 10a is provided on the metal frame 10. The gap 10a can separate the metal middle frame 10 into an antenna portion 101 and a ground portion 102. Since the electronic device can only receive or send 4G LTE signals, the antenna in the electronic device has fewer operating frequency bands, and the communication performance of the electronic device is poor.

[0039] To improve Figure 1 The communication performance of the electronic device shown in the figure, in the related art, LDS technology can be used to add an LDS antenna in the electronic device. However, the cost of the LDS antenna is relatively high, so the cost of the electronic device is also relatively high.

[0040] In addition, the LDS antenna needs to occupy a certain space in the thickness direction of the electronic device. In order to reserve enough space for the LDS antenna, the thickness of the electronic device may need to be set larger, which affects the aesthetics of the electronic device.

[0041] Or, to improve Figure 1 To improve the communication performance of the electronic device shown, a plurality of slots 10a can be added to the metal frame 10, and the plurality of slots 10a can separate the metal middle frame 10 into a plurality of antenna portions 101 and at least one ground portion 102. However, providing a plurality of slots 10a on the metal middle frame 10 will affect the aesthetics and structural stability of the metal frame 10.

[0042] An electronic device provided in an embodiment of the present application may be a smart phone, a tablet computer, a laptop computer, a desktop computer, a router, a customer premise equipment (CPE), a television, a refrigerator or an air conditioner, etc. For example, the electronic device may be a television or a smart phone.

[0043] See also Figure 2 The electronic device may include: a metal middle frame 01, and at least two gaps 0a are provided on the metal middle frame 01, for example Figure 1 Two gaps 0a are shown in FIG. The at least two gaps 0a can separate the metal middle frame 01 into an antenna portion 011 and a ground portion 012 .

[0044] Combination Figure 2 and Figure 3 It can be seen that the antenna portion 011 may be provided with a feed point 0111, a first ground point 0112 and at least one through hole group. Each through hole group in the at least one through hole group may include at least one through hole 011a. Figure 1 A through hole group is shown, and the through hole group may include a through hole 011a. The feed point 0111 and the first ground point 0112 may be located at two sides of a through hole 011a in at least one through hole 011a.

[0045] The target through hole group in at least one through hole group may correspond to a target operating frequency band in a plurality of different operating frequency bands of the antenna portion 011, and accordingly, the sum of the perimeters of at least one through hole 011a included in the target through hole group may be equal to the target wavelength. The target wavelength may be a wavelength corresponding to the target operating frequency band, and the wavelength corresponding to the target operating frequency band may refer to a wavelength corresponding to the minimum frequency within the target operating frequency band.

[0046] Since the antenna portion 011 may be provided with at least one through hole having a sum of circumferences equal to the target wavelength, the at least one through hole may increase the current path of the antenna portion 011. Therefore, compared with an antenna portion without a through hole, for example Figure 1 The antenna part 101 shown, the antenna part 011 of the electronic device provided in the embodiment of the present application can also operate in the target operating frequency band, that is, the operating frequency band of the antenna part of the electronic device provided in the embodiment of the present application adds the target operating frequency band.

[0047] Furthermore, since a through hole is provided, the working frequency band of the antenna part can be increased, so that the electronic device can receive signals of more different frequency bands, without the need to use LDS technology to set an LDS antenna on the inside of the casing of the electronic device, and without adding gaps on the metal middle frame. Therefore, the cost of the electronic device can be avoided and the aesthetics and structural stability of the electronic device can be ensured.

[0048] In summary, the embodiment of the present application provides an electronic device. Since the antenna portion is provided with at least one through hole whose sum of circumferences is equal to the target wavelength, the at least one through hole can increase the working frequency band of the antenna portion, so that the electronic device can receive more signals of different frequency bands. Compared with the method of adding antennas through LDS technology, the electronic device provided by the embodiment of the present application can receive signals of multiple different frequency bands without increasing manufacturing costs.

[0049] Optionally, each through hole 011a may be filled with an insulating material to prevent impurities (such as dust) in the atmosphere from entering the electronic device and affecting the normal use of the electronic device.

[0050] For example, the insulating material filled in each through hole may be plastic.

[0051] Optionally, the target operating frequency band may be the maximum operating frequency band among multiple different operating frequency bands of the antenna unit 011. For example, if the operating frequency band of the antenna unit 011 includes a 4G frequency band and a 5G frequency band, that is, the antenna unit 011 of the electronic device can cover both the 4G frequency band and the 5G frequency band, then the target operating frequency band may be the 5G frequency band.

[0052] Among them, the frequency range of the 5G frequency band can be 3.4 gigahertz (GHz) to 4.9 GHz.

[0053] Optionally, the feed point 0111 and the first ground point 0112 may both be located at one end of the antenna portion 011 .

[0054] In the embodiment of the present application, a through hole group may be provided on the antenna portion 011 , and the through hole group corresponds to a target operating frequency band among a plurality of different operating frequency bands of the antenna portion 011 .

[0055] In an optional implementation, at least one through hole 011a in the through hole group may include a through hole 011a, and the perimeter of the through hole 011a is the target wavelength corresponding to the target operating frequency band. In this case, the positions of the feed point 0111 and the first grounding point 0112 can be interchanged.

[0056] In another alternative implementation, see Figure 4 At least one through hole 011a in the through hole group may include: a first through hole 011a1 and a second through hole 011a2. Figure 4 It can be seen from the figure that the arrangement direction of the first through hole 011a1 and the second through hole 011a2 may be perpendicular to the extension direction of the antenna portion 011.

[0057] The circumference of the first through hole 011a1 may be a first target sub-wavelength corresponding to a target working sub-band in the target working frequency band, and the circumference of the second through hole 011a2 may be a second target sub-wavelength corresponding to another target working sub-band in the target working frequency band.

[0058] That is, the target working frequency band may include two working sub-frequency bands, the first through hole 011a1 may correspond to one of the two working sub-frequency bands, and the second through hole 011a2 may correspond to the other of the two working sub-frequency bands.

[0059] In this case, the feed point 0111 may be located between the two through holes (ie, the first through hole 011a1 and the second through hole 011a2), and the first grounding point 0112 may be located on a side of the first through hole 011a1 away from the feed point 0111. Figure 4 As shown, the antenna portion 011 may also be provided with a second grounding point 0113, which may be located on a side of the second through hole 011a2 away from the feeding point 0111. That is, the first grounding point 0112 and the second grounding point 0113 may be located on both sides of the two through holes.

[0060] In an embodiment of the present application, multiple through hole groups can also be set on the antenna part 011, wherein each through hole group corresponds to a target working frequency band among multiple different working frequency bands of the antenna part 011, and the target working frequency bands corresponding to each through hole group are different.

[0061] Optionally, each through hole 011a may be a circular through hole, an elliptical through hole, an L-shaped through hole, a bent through hole or a rectangular through hole. The embodiment of the present application does not limit the shape of the through hole 011a.

[0062] For example, Figures 2 to 4As shown, each through hole 011 a may be a rectangular through hole, and the length direction of each through hole 011 a may be parallel to the extension direction of the antenna portion 011 .

[0063] In the embodiment of the present application, if the through hole 011a is a rectangular through hole, the difference between half of the perimeter of each through hole 011a and the length of the through hole 011a may be smaller than the difference threshold, that is, the width of the through hole 011a may be smaller than the difference threshold.

[0064] That is, the width of the rectangular through hole 011a can be set to be relatively small, thereby enabling the electronic device to receive signals of multiple different frequency bands while ensuring the structural stability of the electronic device.

[0065] Optionally, the difference threshold may be 3 millimeters (mm).

[0066] Figure 5 is a schematic diagram of the structure of another electronic device provided in an embodiment of the present application. Figure 5 It can be seen that the electronic device may also include a first tuning device 02. An aperture tuning point 0114 may be provided on the antenna portion 011 of the electronic device, and the first tuning device 02 may be connected to the aperture tuning point 0114.

[0067] The first tuning device 02 can perform aperture tuning on the antenna part 01, that is, the frequency of the antenna part 011 can be shifted through the tuning effect of the first tuning device 02, so that the antenna part 011 can work in different working frequency bands, that is, switching between different working frequency bands can be achieved.

[0068] Optionally, the first tuning device 02 may include: at least one of a switch, a capacitor and an inductor. For example, the first tuning device 02 may include: a switch, an inductor and a capacitor, in which case the capacitance of the capacitor is a fixed value, and the switch may be a single-pole double-throw switch. Alternatively, the first tuning device 02 may include: a capacitor, in which case the capacitance of the capacitor is a variable value, that is, the capacitor is an adjustable capacitor. Alternatively, the first tuning device 02 may include: a switch, and the switch may be a single-pole single-throw switch.

[0069] If the first tuning device 02 includes a switch, an inductor and a capacitor, the antenna unit 011 can operate in different operating frequency bands by controlling the on-off of the connection path between the switch and the inductor, or the on-off of the connection path between the switch and the capacitor.

[0070] If the first tuning device 02 includes an adjustable capacitor, the antenna portion 011 can operate in different operating frequency bands by adjusting the capacitance of the adjustable capacitor.

[0071] The capacitance of the adjustable capacitor may range from 1.2 pF to 1.8 pF.

[0072] If the first tuning device 02 includes a switch, the antenna portion 011 can be enabled to operate in different operating frequency bands by controlling the on and off of the switch.

[0073] Please continue to refer to Figure 3 The electronic device may further include: a printed circuit board (PCB) 03 connected to the grounding portion 012 . The first tuning device 02 may be disposed on the PCB 03 .

[0074] Optionally, the PCB 03 may be connected to the grounding portion 012 of the electronic device via a spring, a conductive cloth or a conductive foam.

[0075] In the embodiment of the present application, the electronic device may further include a second tuning device 04, and the second tuning device 04 may be connected to the feeding point 0111. The second tuning device 04 may perform impedance tuning on the antenna portion 011 to ensure the radiation efficiency of the antenna portion 011.

[0076] Optionally, the second tuning device 04 may be arranged on a PCB, and the second tuning device 04 may include: at least one of a switch, a capacitor and an inductor. For example, the second tuning device may include: a switch, an inductor and a capacitor, in which case the capacitance of the capacitor is a fixed value, and the switch may be a single-pole double-throw switch. Alternatively, the second tuning device may include: a capacitor, in which case the capacitance of the capacitor is a variable value. Alternatively, the second tuning device may include: a switch, and the switch is a single-pole single-throw switch.

[0077] If the second tuning device 04 includes: a switch, an inductor and a capacitor, the impedance of the antenna part 011 can be adjusted by controlling the on-off of the connection path between the switch and the inductor, or the on-off of the connection path between the switch and the capacitor, so that the radiation efficiency of the antenna part 011 is higher.

[0078] If the first tuning device 02 includes an adjustable capacitor, the impedance of the antenna portion 011 can be adjusted by adjusting the capacitance of the adjustable capacitor, thereby making the radiation efficiency of the antenna portion 011 higher.

[0079] If the first tuning device 02 includes a switch, the impedance of the antenna portion 011 can be adjusted by controlling the on-off state of the switch, thereby making the radiation efficiency of the antenna portion 011 higher.

[0080] Optionally, the electronic device may further include: a radio frequency signal source disposed on the PCB 03. The radio frequency signal source may be connected to the feed point 0111 via the second tuning device 04 to provide the antenna part 01 with a radio frequency signal.

[0081] That is, the RF signal source can feed the RF signal into the antenna portion 01 through the feeding point 0111 .

[0082] In the embodiment of the present application, in the scenario where at least one through hole group includes a through hole group, the through hole group includes a through hole 011a, and a functional interface is also provided on the antenna portion 011, the through hole 011a can be provided at the location of the functional interface. Since the size of the through hole 011a is generally larger than the size of the functional interface, the through hole 011a can be provided only on the antenna portion 011. Afterwards, the through hole 011a can be filled so that the shape of the filled through hole 011a is the same as the shape of the functional interface.

[0083] The functional interface of the electronic device may include: a headphone interface and a universal serial bus interface, etc.

[0084] Figure 6 1 is a schematic diagram of current distribution when the working frequency band of an antenna unit provided in an embodiment of the present application is a 4G LTE low frequency band. When the RF signal source feeds a signal of 820 MHz to 960 MHz to the antenna unit, that is, a 4G LTE low frequency signal, Figure 6 It can be seen that the current can flow from the feeding point to the grounding portion 012 of the electronic device, forming a complete current loop.

[0085] And, if Figure 6 As shown, the direction of the current on the antenna part 011 does not change. It can be seen that the antenna part 011 of the electronic device provided in the embodiment of the present application can work normally in the 4G LTE low frequency band.

[0086] Figure 7 1 is a schematic diagram of current distribution when the working frequency band of an antenna unit provided in an embodiment of the present application is a 4G LTE intermediate frequency band. When the RF signal source feeds a signal of 1710MHz to 2170MHz to the antenna unit, that is, a 4G LTE intermediate frequency signal, Figure 7 It can be seen that the current can flow from the feed point through the PCB board to the grounding part to form a complete current loop. It can be seen that the antenna part 011 of the electronic device provided in the embodiment of the present application can also work normally in the 4G LTE medium frequency band.

[0087] Figure 8 1 is a schematic diagram of current distribution when the working frequency band of an antenna unit provided in an embodiment of the present application is a 4G LTE high frequency band. When the RF signal source feeds a 2300MHz to 2400MHz signal to the antenna unit, that is, a 4G LTE high frequency signal, the high frequency signal is the third harmonic of the low frequency signal. Therefore, Figure 8It can be seen that the current flow direction on the antenna part changes, and the antenna part 011 can resonate, but can still form a complete current loop. Therefore, it can be seen that the antenna part 011 of the electronic device provided in the embodiment of the present application can also work normally in the 4G LTE high frequency band.

[0088] Fig. 9 is a schematic diagram of current distribution when the working frequency band of an antenna part provided in an embodiment of the present application is a 5G frequency band, Fig.10 1 is a schematic diagram of current distribution when the operating frequency band of another antenna unit provided in the embodiment of the present application is the 5G frequency band. When the RF signal source feeds a 3400MHz to 4900MHz signal to the antenna unit, that is, a 5G signal, in the first half of the cycle, Fig. 9 It can be seen that the current on the antenna portion 011 can flow from point A to point B.

[0089] In the second half of the cycle, Fig.10 It can be seen that the current on the antenna portion 011 can flow from point B to point A. Fig. 9 and Fig.10 It can be seen that the electric potential of the current at point A and point B is different, so an electric field can be formed in the through hole, and the electric field can radiate energy. In addition, the 5th harmonic in the 3400MHz to 4900MHz frequency band will also resonate in the 5G frequency band. Therefore, the antenna part 011 can work in the 5G frequency band.

[0090] Fig.11 is a schematic diagram of a return loss curve of an antenna portion provided in an embodiment of the present application, Fig.11 In FIG. 1 , the horizontal axis represents the operating frequency of the antenna portion 011 , and its unit is GHz, and the vertical axis represents the return loss, and its unit is decibel (db).

[0091] Among them, the return loss (RL) can refer to: the ratio of the power reflected back by the RF input signal to the power of the input signal, and the return loss can be a negative value. The return loss can be used to reflect the radiation performance of the antenna part of the electronic device, and the radiation performance of the antenna part is negatively correlated with the return loss. That is, the smaller the return loss, the better the radiation performance of the antenna part; the larger the return loss, the worse the radiation performance of the antenna part.

[0092] from Fig.11 It can be seen that when the antenna unit works in the 4G frequency band and the 5G frequency band, the return loss of the antenna unit is less than or equal to -6db. It can be seen that the antenna unit 011 of the electronic device provided in the embodiment of the present application can effectively cover the 4G frequency band and the 5G frequency band. Among them, if the return loss of the antenna unit is -6db, it can be said that the antenna unit 011 can work normally.

[0093] In the embodiment of the present application, the operating frequency band corresponding to each through-hole group can be determined by the developer of the electronic device according to user needs. That is, the perimeter of at least one through-hole included in each through-hole group can be designed based on actual needs. The embodiment of the present application takes an electronic device having a through-hole group provided on the antenna part 011 and the through-hole group corresponding to the target operating frequency band as an example to exemplify the manufacturing method of the electronic device.

[0094] The developer of the electronic device can determine the target operating frequency band based on user requirements, and can determine the sum of the perimeters of at least one through hole included in the through hole group based on the target operating frequency band. Figure 1 The antenna unit 101 shown is provided with at least one through hole, and the sum of the perimeters of the at least one through hole is equal to the target wavelength corresponding to the target working frequency band. Thus, the antenna unit provided with at least one through hole, that is, the antenna unit 011 provided in the embodiment of the present application, can work in the target working frequency band, that is, the antenna unit provided in the embodiment of the present application can receive or send signals in the target working frequency band. As a result, the frequency band range of the signal received by the electronic device provided in the embodiment of the present application is reduced compared to Figure 1 The electronic device shown is wider.

[0095] In summary, the embodiment of the present application provides an electronic device. Since the antenna portion is provided with at least one through hole whose sum of circumferences is equal to the target wavelength, the at least one through hole can increase the working frequency band of the antenna portion, so that the electronic device can receive more signals of different frequency bands. Compared with the method of adding antennas through LDS technology, the electronic device provided by the embodiment of the present application can receive signals of multiple different frequency bands without increasing manufacturing costs.

[0096] The term "at least one" in this application means one or more, and the term "plurality" in this application means two or more.

[0097] The above description is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises: a metal middle frame; At least two gaps are provided on the metal middle frame, and the at least two gaps separate the metal middle frame into an antenna portion and a ground portion; The antenna portion is provided with a feeding point, a first grounding point and at least one through hole, and the feeding point and the first grounding point are located on two sides of one of the through holes; The sum of the perimeters of the at least one through hole is equal to a target wavelength, and the target wavelength is a wavelength corresponding to a target operating frequency band among a plurality of different operating frequency bands of the antenna portion; Furthermore, the length direction of each through hole is parallel to the extension direction of the antenna portion, and the difference between half of the perimeter of each through hole and the length of the through hole is smaller than a difference threshold.

2. The electronic device according to claim 1, characterized in that: The target operating frequency band is the maximum operating frequency band among the multiple different operating frequency bands.

3. The electronic device according to claim 1, characterized in that: The at least one through hole comprises a first through hole and a second through hole, and an arrangement direction of the first through hole and the second through hole is perpendicular to an extension direction of the antenna portion; The feeding point is located between the two through holes, and the first grounding point is located on a side of the first through hole away from the feeding point; A second grounding point is also provided on the antenna portion, and the second grounding point is located on a side of the second through hole away from the feeding point.

4. The electronic device according to claim 1, characterized in that: Each of the through holes is a rectangular through hole.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The electronic device further includes a first tuning device connected to the antenna portion.

6. The electronic device according to claim 5, characterized in that: The first tuning device includes at least one of a switch, a capacitor and an inductor.

7. The electronic device according to claim 5, characterized in that: The electronic device further comprises: a printed circuit board connected to the grounding portion; The first tuning component is disposed on the printed circuit board.

8. The electronic device according to any one of claims 1 to 4, characterized in that: The electronic device further comprises: a second tuning device; The second tuning device is connected to the feeding point and is used for performing impedance tuning on the antenna portion.

9. The electronic device according to any one of claims 1 to 4, characterized in that: Each of the through holes is filled with insulating material.

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